The effect of frequency dependent scattering and attenuation on the estimation of blood velocity using ultrasound
- 1 November 1992
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
- Vol. 39 (6), 754-767
- https://doi.org/10.1109/58.165561
Abstract
A comprehensive theoretical performance comparison of the wideband maximum-likelihood (WMLE) and cross-correlation strategies, previously proposed and evaluated for the estimation of blood velocity using ultrasound is presented. It is based on evaluation of the bias, local and global accuracy, and signal-to-noise ratio (SNR) performance. The results show that the intervening medium does not bias either wideband estimation, due to the effect of tracking the scattering target. The presence of intervening tissue actually improves the global accuracy of both wideband estimators, without a significant change in the local accuracy of either wideband estimator. After the transmission of P pulses, a comparison of the performance of the two strategies shows that the cross-correlation estimator requires P/sup 2/ correlations to achieve performance similar to that of the WMLE with P operations. In addition, the WMLE can increase the effective SNR in comparison with cross correlation.< >Keywords
This publication has 13 references indexed in Scilit:
- Improved color flow mapping using the wideband maximum likelihood estimatorPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Volumetric blood flow via time-domain correlation: experimental verificationIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1990
- Flow velocity profile via time-domain correlation: error analysis and computer simulationIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1990
- Pulsed Doppler accuracy assessment due to frequency-dependent attenuation and Rayleigh scattering error sourcesIEEE Transactions on Biomedical Engineering, 1990
- Time-domain estimation of the center frequency and spread of Doppler spectra in diagnostic ultrasoundIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1988
- Simulation of Real-Time Frequency Estimators for Pulsed Doppler SystemsUltrasonic Imaging, 1986
- Time Domain Formulation of Pulse-Doppler Ultrasound and Blood Velocity Estimation by Cross CorrelationUltrasonic Imaging, 1986
- A New Time Domain Technique for Velocity Measurements Using Doppler UltrasoundIEEE Transactions on Biomedical Engineering, 1985
- Real-Time Two-Dimensional Blood Flow Imaging Using an Autocorrelation TechniquePublished by Institute of Electrical and Electronics Engineers (IEEE) ,1985
- Delay-Doppler Ambiguity Function for Wideband SignalsIEEE Transactions on Aerospace and Electronic Systems, 1967